This Decorator Spider Crab (Cyclocoeloma tuberculata) uses its densely packed tubercles to cover itself with anemones, tunicates and anything else it finds useful as a disguise. The dual black bands on the legs identify this species, and is often the only thing visible to identify this species.
Image taken during a night dive on the House Reef in front of the SeaQuest Dive Center site in Moalboal in the province of Cebu, The Philippines.